To Study the Role of Temperature and Sodium Hydroxide Concentration in the Synthesis of Zinc Oxide Nanoparticles

In this work, zinc oxide (ZnO) nanostructures were synthesized by using zinc chloride and sodium hydroxide as the precursors at different temperatures. The ZnO nanostructures obtained were characterized by X-ray diffraction (XRD), Scanning Electronic Microscopy (SEM), Energy Dispersive X ray Spectroscopy (EDAX).The ZnO powders have hexagonal wurtzite structure and nanometric- sized crystallites. The size of the particle increases as the reaction temperature is increased. An attempt has been made to find out the effect of temperature on the morphology as well as particle size and to optimize the value of temperature for stable smaller sized particles.Once the temperature is optimised effect of base concentration is studied. The base concentration is varied and different samples are synthesized for various base concentrations keeping the temperature constant. The basic idea is to design materials with the proper morphology, size, shape, and texture for desired application. The size of the particle is found to be directly related to ionic strength. Increasing the base concentration increases the surface charge density and hence reduces the interfacial tension. This paper is an attempt to optimize the base concentration for desired particle size and shape to render it suitable for Biomedical application.